Patents by Inventor Syoji Nakamura

Syoji Nakamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electric arc furnace for steel making, with no refractory bricks at the furnace wall
    Patent number: 4161620
    Abstract: An electric arc furnace for steel making includes a shell portion and a separate furnace bed portion made, the shell portion having a plurality of water-cooling boxes, instead of refractory bricks, along its inner circumferential surface, and the furnace bed portion being made slightly larger in outside diameter than the shell portion, the two portions being separably combined into a furnace.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: July 17, 1979
    Assignee: Kyoei Seiko Kabushiki Kaisha
    Inventor: Syoji Nakamura